mckellar



3 Sheets-Sheet 1.

Patentedvmr. 26, 1895.4

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(No Model.)

P. MOKELLAR.

MACHINE FOR PULVERIZING ROGK, &c. No. 536,225.

(No Model.) 3 Sheets+Sheet 2.

P. MOKELLAR.

MACHINE FOR PULVERIZING ROCK, aw. A

No. 536.225. Patented Mar. 26, 1895.

H: mums Prfzns co. PHOTO-nwo.. wAsHlnmoN. u. l:v

(No Model.) s sheets-sheen a.

1 P. MGKBLLAR.

MACHINE lFOR PULVERIZING ROCK, &G.

No. 535,225. Patented Mar. 2,5, 1895.

1 Iizvenor ma hay UNITED STATES *PATENT OFFICE. v

PETER MCKELLAR, OF FORT WIL;LIAM, CANADA.

MACHFNEFOR PULVERIZING ROCK, sec.

SPECIFICATION forming part of Letters Patent No. 536,225, dated March .26,18'95.v

Applicationfiled November 13, 1894. Serial No. 528,679. (No model.) i n ,Y -To all whom it mayconcern: Be it known that I, PETER MOKELLAR, a citizen of Canada. residing at Fort William,

in the district of Thunder Bay and Province of Ontario, Canada, have invented certain new and useful Improvements in Machines for Pulverizing Rock, &c. and I do declare the followan improvement upon the machine disclosed" in my Letters Patent No. 526,788, which ernbodies such a construction that in operation the full Weight of the impact 'rolls an'd the` wheel carrying thesame is imposed upon the rock or ore so as to facilitate the crushing of the same. A v

One'of the objects of my present invention is to provide a rock or ore pulverizing machine in which the weight of the impact rolls proved machine with parts in elevation.

and the wheel carrying the same is utilized to eect the crushing of the ore or rock, and in which it is consequently duly necessary to rotate the said wheel at a speed sufficient to cause the minute particles of rock or ore to (C oalt.

' Another object of the invention is to provide an ore or rock crushing machine which may be used to advantage in crushing ore containing gold, and still another object is to provide means whereby grit and line particles of ore will be prevented from getting into the bearings of the shafts ofthe impact rolls, and accelerating the wear thereof, and means whereby wear of the said shafts may be readily taken up.

Other objects and advantages of the invention will be fully understood from the following description and claims when taken in connection with the annexed drawings, in which-' i Figure 1, is a ytransverse section of my Bitn- ,1g- 2, is a section taken in, 'the plane indicated by the line 2, 2, of Fig. l.. Fig.Y 3, is a vertical, longitudinal section of the machine with parts in elevation. Fig. 4, is an enlarged,

dialnetrical section of one of thejournal boxes of one impact roll shaft. Fig. 5, is a transverse section taken in the plane indicated by the line x, of Fig. 4, and Fig. '6, is a horizontal section taken in the plane indicated by the line 6, 6, of Fig. 2.

In the said drawings, similar letters designate corresponding parts in all of the several Views, referring to which- A, indicates the mortar of my improved machine. This mortar is preferably of a general semi-circular form, as illustrated, and it comprises, bypreference the curvilinear bottoma, having the parallel ridges b, which are 'of an even height throughout their lengt-h and are provided for an intermediate portion of their length with the lateral fian ges c, and the side walls ol, which rise from the ridges b, and are provided with the horizontal and vertical flanges af, designed to serve in conjunction with .the flanges c, to form openings for the reception of the screens B, which are formedv in the flanges o, d, e, as illustrated. The flanges cfwhile they extend laterally along the ridges b, are of a/less curvature than said ridges to afford greater screening capacity; and they are provided with copper plates O, which are desirable for obvious reasons when the machine is used for crushing gold and silver bearing ore, but which may be and preferably are omitted when the pulverizer is used for crushing other ores and rock.

The mortar A, is provided in the channel i formed by the/ridges b, with a shoe D, of hardvened metal designed to prevent wear of its bottom, and saidmortar is also provided in its side walls with notches h, the'purpose of which will be presently described.

E, indicates the wheel which carries the irnpact rolls and is designed to be rotated in the mortar A. This wheel E, may be cast in one nected therewith will be imposed upon the ore or rock in the bottom of the mortar to facilitate the crushing thereof,and the wheel E, will also be enabled to accommodate itself to the amount of ore or rock in the mortars; the notches h, in the mortar walls d, serving to permit a limited movement of the shaft F. Scrapers X7, are fastened to wheel E, as shown, and are adapted to level the material in advancerof the impact rolls.

In order to render the rotation of the wheel E, more regular and even, I extend the shaft F, on opposite sides of the mortar and journal it at one end in a bearing box I, which is swiveled in suitable bearings J, and provide it at its opposite end or other suitable point. with a balance wheel as K. `Thus it will be seen that as the shaft is rotated through the medium of abelt taking around the belt pulley L, the wheel E, will be evenly rotated with out interfering with theimposition of the envtire weight thereof upon the rock or orewhich is a desideratum. When the Weight of the wheel E, and its appurtenances are thus imposed upon the rock or ore, the crushing is done entirely by the weight with the little extra force gained by the velocity to rotate said wheel at a speed sufficient to make the finer particles of ore or those which are small enough to pass through the screens B, fioat.

It is desirable in some cases to limit the downward movement of the Wheel E, so that when in its lowermost position it will rest at a certain distance above the mortar bottom, and I therefore provide the wedges M, better illustrated in Figs. l, and 2. These wedges M, take `through openings in the guides y',at points above the lugs k, and they are designed to be adjusted for the purpose stated,and are also designed to be adjnstably xed through the medium of the Set screws m, `which take through the guidesj, as better shown in Fig. 6.

N, indicates the impact rolls which are, by

preference, of a similar construction to those disclosed in my Letters Patent, and are similarly arranged so as to enable them to balance eachother and the wheel. Thesaid impact rolls are fixed upon shafts P, and these shafts which have conical or tapered ends p, are journaled in'bearing boxes Q, which are secured by removable caps R, in seats q, formed at equidistant points in thel periphery of the wheel E.

The journal or bearing boxes Q, are of a peculiar and advantageous construction and they respectively comprise the outer shell r, which isinteriorly threaded, the body s, which is exteriorly threaded to engage the threads of the shell and is provided at its outer end with a receptacle t, for lubricant or packing, the bushing u, preferably of brass, which is designed to be readily removed when `worn and be replaced by a new one, and the guard cap o, which is preferably of right-angle form in cross-section and is interiorly threaded as shown, so as to enable it to engage the body the plates a4, by bolts a, as shown.

s, and press the packing in space t?, against the shaft, and effectnally exclude grit and the like from the box and thereby prolong the usefulness of the same. y

The outer shell r, of the bearing boxes Q, is fixed against movemeuthy the screw S, which takes through the cap Rand the shell or casing r, `and into ai peripheral. groove as, in the body s, and consequently prevents undue lengthwise movement of said body. By this construction it will be seen that the body' s, may be readily adjusted lengthwise to take up any wear.

A journal box or bearing such as described, is particularly adapted for rock or ore pulverizing machines inasmuch as the grit andtine particles of ore arc effectnally excluded and for the further reason that all wear may be e readily taken up andthe parts most subjected to frictional wear may be readily removed and be replaced by new ones without the employmeut of skilled labor. e

In order to prevent the finer particles of ore from flying out of the machine in operation, I provide the cover or hood T, better illustratedin` Figs. l, and 3. This cover or hood T, is formed in two sections y, a, and these sections are detachably connected by bolts or the like, to the mortar walled, whereby it will be seen that either one or both may be readily removed when it is desired to gain access to the interior of the machine for repairs or for any otherpurpose.

For the purpose of facilitating cleaning of the mortar A, I provide the normally plugged drawings, the contiguous vertical edges of the hood `sections y, z, rest apart so as to form vertical play spaces a3, for the shaft F. These spaces are in alignment with the notches h, in the side walls of the mortar; and in order to prevent the pulverized ore from iiying out of such spaces laas, I providethe vertical plates a4, which rest on the inside of the side walls ofthe mortar and hood and receive theshaft F,`and the plates a5, which rest on the outside ofthe hood walls and are connected with The plates a, extend through the top y, of the hood T, as shown and move with the shaft F, and they are therefore adapted to effectually prevent the ore from being thrown out of the mortar and hood.

The `general operation of myimproved machine is similar to that of the machine disclosed in myaforesaid LettersPatent; the ore beingfed in at the mouth W, and passing out, when pulverized, through the screens B.

., I have in some respects specifically dementof the parts of my improved machine in ICO rol;

IIO

'order to impart a full and clear understanding of the same, but I do not desire to be understood as confining myself to such specific construction and arrangement of parts as such changes or modifications maybe made in practice as fairly fall'within` the scope of my invention.

Having described my invention, what I claim isl. In a machine for pulverizing ore, rock, and the like, the combination of a mortar or receptacle having vertical guides at'its opposite sides, vertically-movable bearings arranged in said guides, a bearing I, mounted in suitable bearings and located at one side of the mortar or receptacle, a shaft journaled in the verticallymovable bearings and in the bearing I, and having a fly or balance wheel on the opposite` sides of the mortar with respect to the bearing I, and a wheel fixed on the shaft and arranged to turn in the mortar or receptacle, substantially as specified.

' of vthe shaft, and a ring '0, mounted on the .2. The combination of a shaft having its end tapered, an interiorlythreaded shell a", a suitable support for said shell ra body having exterior threadsto engage those of the shell aud adapted to receive the tapered end shaft and having interior threads adapted to engage the threads of the body, substantially as and for the purpose set forth.

3. In a machine for pulverizing ore or rock,

.the combination of the Wheel having notches ing the shells fr, with respect to the wheel, substantially as and for the purpose set forth.

4, In a machine for pulverizing ore or rock, the combination of thewheel having notches in its preiphery, a shaft having its ends tapered and carrying an impact roll, the journal boxes or bearings arranged in the`peripheral `notches of the wheel and respectively comprising an interiorly threaded shell r, the exteriorly threaded body s, engaging the shell r,

the combination of a mortar having notches h, in its side walls,l a hood arranged on the mortar and having vertical play spaces a3, in alignment With'the notches h, the wheel arranged in the mortar and having its shaft extending through the notches h, and j ournaled in vertically movable bearings, the verticallymovable plates a4, arranged on the inner` sides of the mortar and hood walls and receiving Athe shaft of the wheel, and the plates a5, ar-

ranged on the outside of the hood walls and connected and adapted to move with the plates a4, substantially as and for the purpose set forth'. Y

In testimony whereof I affix my signature in presence of two witnesses. l

PETER MCK-ELLAR.

' Witnesses;

E. A. CARPENTER, E. A. MoRToN. 

